Maxim Integrated / Mbed 2 deprecated MAX44000PMB1_Demo

Demonstrates the MAX44000 library and some of the features of the MAX44000

Dependencies:   MAX44000 ard2pmod mbed

Fork of ALS_ARD2PMOD_Demo by Maxim Integrated

MAX44000PMB1 Demonstration

This demonstrates some of the capabilities of the MAX44000. This is written to work with the MAXREFDES72# adapter board and the MAX44000PMB1 peripheral module. It uses the standard Arduino pin names and it will compile for most arduino form-factor mbed boards. /media/uploads/switches/max44000pmb1_demo.jpg To run this demonstration you will need:

In this demonstration the LEDs are changed based on data from the sensor.

  • LED1 toggles when something is first detected by the proximity sensor.
  • LED2 indicates when the Ambient Light Sensor reads greater than a set value (alsLim).
  • LED3 will stay on whenever something is detected by the proximity sensor and stay on for an additional 5s after it is no longer detected.

Note: Some boards use D13 for an LED signal, so this example uses the second row (row B, pins 7 through 12) of the Pmod connector. /media/uploads/switches/max44000_align.jpg

Tested platform boards

Links to external supporting material

main.cpp@13:fb522023a522, 2016-10-19 (annotated)

Committer:
switches
Date:
Wed Oct 19 17:11:00 2016 +0000
Revision:
13:fb522023a522
Parent:
11:a799d1525a4d 
Changed drive strength to 10mA (down from 110mA).  This reduces the sensitivity and range of the proximity sensor, but it is compatible with MAX44000PMB1 boards that were built with 33 Ohm resistors inline with the power supply.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gsteiert 2:405cc6627ffb 1 /* MAX44000 Ambient Light Sensor / Proximity Sensor Demo
gsteiert 2:405cc6627ffb 2 * This demonstrates some of the capabilities of the MAX44000.
switches 11:a799d1525a4d 3 *
switches 11:a799d1525a4d 4 * This is written to work with the ARD2PMD adapter board and
switches 11:a799d1525a4d 5 * the MAX44000PMB1. It uses the standard Arduino pin names
gsteiert 2:405cc6627ffb 6 * and it will compile for most arduino form-factor mbed boards.
gsteiert 2:405cc6627ffb 7 *
gsteiert 2:405cc6627ffb 8 * LED1 toggles when something is first detected by the proximity sensor.
gsteiert 2:405cc6627ffb 9 * LED2 indicates when the Ambient Light Sensor reads grater than alsLim.
switches 11:a799d1525a4d 10 * LED3 will stay on whenever something is detected by the proximity sensor
gsteiert 2:405cc6627ffb 11 * and stay on for an additional 5s after it is no longer detected.
gsteiert 2:405cc6627ffb 12 *
gsteiert 2:405cc6627ffb 13 * The following boards have been tested to work:
switches 8:fb192510004d 14 * MAX32600MBED
switches 11:a799d1525a4d 15 *
switches 11:a799d1525a4d 16 * Some boards use D13 for an LED signal, so this example uses the second
switches 11:a799d1525a4d 17 * row (row B, pins 7 through 12) of the Pmod connector.
gsteiert 2:405cc6627ffb 18 */
gsteiert 2:405cc6627ffb 19
gsteiert 0:803011eae289 20 #include "mbed.h"
switches 5:b39bfe8e3d09 21 #include "ard2pmod.h"
switches 9:22f6995ab785 22 #include "MAX44000.h"
gsteiert 0:803011eae289 23
switches 9:22f6995ab785 24 MAX44000 max44000(D14, D15);
gsteiert 2:405cc6627ffb 25 DigitalOut tog(LED1);
gsteiert 2:405cc6627ffb 26 DigitalOut als(LED2);
gsteiert 2:405cc6627ffb 27 DigitalOut dly(LED3);
gsteiert 1:03aeb304d3b3 28 DigitalIn pb3(D6); // Set as input to remove load from PB3
gsteiert 1:03aeb304d3b3 29 DigitalIn pb4(D7); // Set as input to remove load from PB4
gsteiert 1:03aeb304d3b3 30
gsteiert 4:226ef11c3ef4 31 const int alsLim = 0x0008;
gsteiert 0:803011eae289 32
gsteiert 0:803011eae289 33 int main()
gsteiert 0:803011eae289 34 {
switches 9:22f6995ab785 35 Ard2Pmod ard2pmod(Ard2Pmod::PMOD_TYPE_I2C_B); // Configure ard2pmod multiplexer for I2C row B (bottom row)
gsteiert 1:03aeb304d3b3 36
switches 13:fb522023a522 37 max44000.init(MAX44000::MODE_ALS_PROX, MAX44000::ALSTIM_64X, MAX44000::ALSPGA_1X, MAX44000::DRV_10);
gsteiert 1:03aeb304d3b3 38
gsteiert 1:03aeb304d3b3 39 bool lastProx = false;
gsteiert 1:03aeb304d3b3 40 int offDelay = 0;
gsteiert 2:405cc6627ffb 41 tog = false;
gsteiert 2:405cc6627ffb 42 als = false;
gsteiert 2:405cc6627ffb 43 dly = false;
gsteiert 1:03aeb304d3b3 44
gsteiert 1:03aeb304d3b3 45 while (true) {
gsteiert 1:03aeb304d3b3 46 wait (0.02);
switches 9:22f6995ab785 47 int alsData = max44000.readALS();
switches 9:22f6995ab785 48 int proxData = max44000.readReg(MAX44000::REG_PRX_DATA);
switches 9:22f6995ab785 49
gsteiert 4:226ef11c3ef4 50 als = (alsData < alsLim);
gsteiert 1:03aeb304d3b3 51
switches 9:22f6995ab785 52 if (proxData) {
gsteiert 1:03aeb304d3b3 53 if (!lastProx) {
gsteiert 2:405cc6627ffb 54 tog = !tog;
gsteiert 1:03aeb304d3b3 55 }
gsteiert 1:03aeb304d3b3 56 lastProx = true;
gsteiert 1:03aeb304d3b3 57 offDelay = 250;
gsteiert 2:405cc6627ffb 58 dly = false;
gsteiert 1:03aeb304d3b3 59 } else {
gsteiert 1:03aeb304d3b3 60 lastProx = false;
gsteiert 1:03aeb304d3b3 61 }
switches 11:a799d1525a4d 62 if (offDelay > 0) {
switches 11:a799d1525a4d 63 offDelay -= 1;
switches 11:a799d1525a4d 64 } else {
switches 11:a799d1525a4d 65 dly = true;
switches 11:a799d1525a4d 66 }
gsteiert 1:03aeb304d3b3 67 }
gsteiert 0:803011eae289 68 }